Williams Bay, WI Radon Mitigation and Testing

Q: What is the average radon level in Williams Bay, WI?

Based on 1 user-submitted tests, the average radon level is 12.00 pCi/L.

Q: What EPA Radon Zone is Williams Bay in?

Williams Bay is in Walworth County, EPA Zone 1.

Q: How much does radon mitigation cost in Williams Bay?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Avg: 12.00 pCi/L

Walworth County

EPA Zone 1

1 user test

Situated on Geneva Lake in Walworth County, Williams Bay has recorded an average radon level of 12.0 pCi/L based on limited testing data, significantly exceeding the EPA action level. This lakeside community (53191) sits in EPA Zone 1 where glacial deposits over dolomite bedrock can enhance radon production. Given the substantially elevated reading and the area's geological characteristics, comprehensive radon testing and mitigation should be high priorities for all local homeowners.

12.00

pCi/L average

Above EPA Action Level

Based on 1 user-submitted radon test for homes in Williams Bay, WI. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Williams Bay, WI Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Williams Bay, WI Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Williams Bay, Wisconsin Radon Levels

User-submitted radon test readings from homes in the Williams Bay area.

Radon Level	City	Home Age	Foundation	Submitted
12 pCi/L	Williams Bay, WI	0-20 Years	Full Basement	Oct 2017

Have a radon test result for Williams Bay? Submit your reading to help other homeowners.

Williams Bay Radon Facts

Key details about the radon risk profile for Williams Bay and the 53191 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Walworth County, WI

Zip Code

53191

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

12.00 pCi/L

User Tests Submitted

Williams Bay and the 53191 zip code are located in Walworth County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Williams Bay, WI

What is the average radon level in Williams Bay, WI?

Based on 1 user-submitted test, the average radon level in Williams Bay is 12.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Williams Bay in?

Williams Bay and the 53191 zip code are in Walworth County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

How much does radon mitigation cost in Williams Bay?

Radon mitigation in Williams Bay typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Williams Bay?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in Wisconsin

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Milwaukee	10.00 pCi/L	3
Prairie Du Chien	10.00 pCi/L	2
Stevens Point	5.50 pCi/L	2
Menomonie	10.00 pCi/L	1
Delavan	6.00 pCi/L	1
Shawano	No submissions	0
Sturgeon Bay	No submissions	0